Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists in Germany have developed a candy that doesn't cause cavities.
11
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
One barrel of petroleum holds 42 gallons.
20
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Nylon is made from coal and petroleum.
42